Obs. : 2023-04-28
Planet	Ly alpha (photons/cm^2/sec)
Mercury    8.685e+08
Venus      8.740e+08
Earth      8.506e+08
Mars       8.672e+08
Jupiter    8.587e+08
Saturn     8.308e+08
Uranus     8.685e+08
Neptune    8.532e+08
Pluto      8.241e+08